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Table 1 Results of analyses which regressed in vitro Plasmodium falciparum growth inhibition against each cross-reactive antibody level.

From: Suppression of Plasmodium falciparum by serum collected from a case of Plasmodium vivax infection

  Simple linear regression Prais-Winsten's regression
   half-day†† one-day†† two-day††
  (N = 64) (N = 62) (N = 50) (N = 27)
IgM against schizont extract R2 = 0.50
(P < 0.0001)
R2 = 0.43
(P < 0.0001)
R2 = 0.44
(P < 0.0001)
R2 = 0.56
(P < 0.0001)
IgM against MSP-119 R2 = 0.38
(P < 0.0010)
R2 = 0.16
(P = 0.0016)
R2 = 0.18
(P = 0.0022)
R2 = 0.16
(P = 0.036)
IgG against szhitont extract R2 = 0.22
(P = 0.0001)
R2 = 0.011
(P = 0.41)
R2 = 0.026
(P = 0.27)
R2not obtained
(P = 1.0)
IgG against MSP-119 R2 = 0.029
(P = 0.18)
R2 = 0.079
(P = 0.063)
R2 = 0.22
(P = 0.0006)
R2 = 0.070
(P = 0.18)
  1. Each regression analysis was conducted against single independent variable. One serum sample (day 6) was not available for antibody measurements and growth inhibition assays. †† For Prais-Winsten's analysis, the data was aggregated in each time-step of half-day, one-day or two-day lengths.